Smoking pipe



Feb. 17, 1953 R, 1 sMlTH 2,628,622

SMOKING PIPE Filed April 3, 1946 Nw' @0M/Wmv A 7]' ORNE Y Patented Feb. 17, 1953 SMOKING PIPE Robert Lequeux Smith, San Diego, Calif., assignor of one-sixth to William H. Dean and one-sixth to A. B. Bowman, both of San Diego, Calif.

Application April 3, 194:6,y Serial No. 659,352

1 Claim. 1

My invention relates to a smoking pipe, more particularly for use in smoking tobacco, and the objects of my invention are:

First, to provide a pipe of this class in which Volatile uids are cooled and condensed, and in which the smoke is further conditioned by passing through a filtering element providing a very cool, clean smoke;

Second, to provide a pipe of this class in which a heat exchanger casing provides preliminary controlling and condensation of the volatile iluids carried in the smoke whereafter the smoke is ltered through fresh, clean tobacco providing a smoke which is cool, filtered and avored by fresh, clean tobacco;

rlfhird, to provide a pipe of this class in which condensed liquid is trapped and prevented from flowing forwardly into the pipe bowl, and also in which saliva is trapped preventing the same from owing backwardly through the stem and into the smokers mouth;

Fourth, to provide a pipe of this class having heat exchanger means adapted to condense volatile fluids of the smoke into a liquid wherein said liquid is trapped and prevented from entering and damping the ltering tobacco through which the smoke passes subsequently to the cooling thereof;

Fifth, to provide a pipe of this class which may be constructed of conventional bowl and stem elements in connection with heat exchanger and tobacco containing casing members which are readily connected to said conventional bowl and stem elements;

Sixth, to provide a pipe of this class which may be readily cleaned without soiling the iingers of the operator;

Seventh, to provide a pipe of this class from which the used filtering tobacco is readily and easily removable;

Eighth, to provide a pipe of this class in which fresh, filtering tobacco is readily and easily placed; and

Ninth, to provide a pipe of this class which is very simple and economical of construction, efficient in operation and which will not readily deteriorate or get out of order.

With these and other objects in View as will appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claim. Reference is had to the accompanying drawings and to the characters of reference thereon forming a part of this application, in which:

Figure 1 is a side elevational View of a form of my smoking pipe; Figure 2 is an enlarged longitudinal sectional view taken from the line 2 2 of Figure 1 showing the pipe bowl and stem elements by dash lines; Figure 3 is an end view of the structure shown in solid lines in Figure 2 of the drawings; Figure 4 is an enlarged longitudinal sectional view of a modified form of my smoking pipe showing portions in elevation to amplify the illustration and showing the ltering material omitted; Figure 5 is a transverse sectional View taken from the line 5-5 of Figure 4 and showing the nltering material omitted; and, Figure 6 is a transverse sectional view taken from the line 6-6 of Figure 4.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawing.

In the structure as disclosed in Figures 1 to 3 inclusive of the drawings, the parts are designated as follows:

The bowl l, stem 8, heat exchanger casing 9, casket l0 and the cover I I.

The heat exchanger casing 9 is secured in connection with the conventional bowl member l and conventional stem 8 and interconnects the same as shown in Figure 1 of the drawings. This heat exchanger casing 9 is provided with external annular heat exchanger nns 9a on the outer side thereof, as shown best in Figure 2 of the drawings. The forward end of this heat exchanger casing 9 is provided with a female connection portion Qc arranged to engage the conventional adapter la in connection with the bowl l. The forward end of the heat exchanger cas ing 9 is provided with a restricted opening or orifice 9c communicating with an enlarged hollow-cylindrical bore portion 3d in which is positioned the basket l0. The opposite end of the heat exchanger casing 9 is provided with a male adapter portion 9e and a reduced diameter portion 9j contiguous therewith arranged to provide a saliva trap within the stem 8, all as shown best in Figure 2 of the drawing. rihe basket l0 is provided with an internal heat exchanger portion Ilia forming the bottom of the basket which is provided with a helically threaded portion HJ?) communicating with the orifice 9c in the forward end of the heat exchanger casing 9. This helically screw threaded portion H31) provides an elongated circumferential iluid passage adjacent the ns 9a of the heat exchanger casing 9, as shown best in Figure 2 of the drawings. Connected to this end Ilia of the basket l0 is an extending strap lc having an angularly dis'- posed end portion Id engaging the extending end of the heat exchanger casing 8. The cover II is spiral in form, as shown in Figure 3 of the drawings and is preferably made of fiat resilient material. This cover II is frictionally engaged on the inner side of the heat exchanger casing fl at its extended end, and serves as a retainer for tobacco in the heat exchanger casing 9, all as shown best in Figure 2 of the drawings.

The operation of my smoking pipe as shown in Figures 1 to 3 inclusive of the drawings is substantially as follows:

When the smoker draws smoke through the heat exchanger casing 9, the smoke first passes through the orifice 9c whereupon condensation of the volatile fluids begins. Then the smoke passes around the helically threaded portion of the basket III at the screw threads IIib thereof whereupon further condensation takes place as a result of the heat exchange provided by the fins 9a.. After the smoke passes to the end of the screw threaded portion. IIIb it passes through fresh clean tobacco and is filtered therethrough toward the cover II, through which it passes to the stern 8 and the mouth of the smoker. When removing the used filtering tobacco from the heat exchanger casing E the angularly disposed handle portion Id is grasped and the basket I is ree moved from the heat exchanger casing 9 carrying with it the used tobacco and the cover II. The helical threads IIlb are readily wiped off and may be positioned in the heat exchanger casing 9 after the heat exchanger' casing 9 is wiped out. Fresh tobacco is then inserted in the heat exchanger casing 9, and the cover II is placed in position as shown best in Figure 2 of the drawings. The pipe is then ready to be used again` It will be noted that condensation in the heat exchanger casing 9 is prevented from passing through the small orifice 9c forwardly into the pipe bowl 1, and that the reduced diameter trap portion Sf prevents saliva from passing from the stem 8 into the tobacco in the heat exchanger casing 9.

In the modification as shown in Figure 4 to 6 inclusive of the drawings, the parts are designated as follows:

The bowl shank member I2, stem member I3, adapter I4, heat exchanger casings I5 and I6, internal heat exchanger I1, filter casing basket I9, and the cover 20.

The bowl shank member I2 and stem I3 are substantially conventional in form. Secured in connection with the bowl shank member I2 is the substantially conventional adapter Il which extends into the bore I2a of the bowl shank member I2 at one end, and into the heat exchanger casing I5 at its other end, it being noted that the adapter I 4 extends a considerable distance inwardly of the heat exchanger casing I5 at its end portion Ila. The forward end of the heat exchanger casing I5 is provided with a fairly deep annular groove I5a arranged to provide a heat exchanging surface adjacent the front wall I5b thereof. The outer side of this heat exchanger casing I5 is provided with circumferential heat exchanger iins |50, and the opposite end of the heat exchanger casing I5 is connected in telescopic relation with the heat exchanger casing I5. The stem I3 extends inwardly of the heat exchanger casing I 6 providing a saliva trap in the heat exchanger casing I6 rearwardly of the end I3a of said stem I3. Also the large diameter of the heat exchanger casing I6 provides for a saliva trapping reservoir around the outer side of the stem I3 adjacent its end portion I3a. The internal heat exchanger I1 is provided with external helical threaded portions I1a defining a relatively long helical passage at the inner side wall of the heat exchanger casing I5 adjacent the heat exchanger fins I5c thereof. This internal heat exchanger I1 is provided with an enclosing partition I1b near the end Ila of the adapter I4. The internal heat exchanger I1 is a hollow cylindrical member at both sides of the partition I1b, and opposite ends of this internal heat exchanger I1 are provided with notched portions I1c through which smoke passes adjacent the heat exchanger wall I5b of the heat exchanger casing I5. and the ange I8a of the filter casing I8. The filter casing I8 is a hollow cylindrical member and is supported intermediate the internal heat exchanger I1 and the internal annular shoulder Isa of the heat exchanger casing I6 by the flange portion I8a integral with said filter casing I8. The filter casing I8 extends near to the partition I1b of the internal heat exchanger I1 and is arranged to contain tobacco or other suitable material. not shown, therein for filtering smoke passing through said filter casing I8. The basket I8 is provided with a perforated end I 8b. However, the basket is cup-shaped or tubular and is inserted in the illter casing I8, as shown in Figure 4, and fresh clean tobacco is placed in the basket I9 between the angularly extending portions I8a whereby the basket is lled from the end adjacent I9a to the open end of the filter casing I8. The cover 20 is a substantially disc shaped member provided with a plurality of tabs 20a frictionally engaged with the outer side of the filter casing I8 near the flange I 8a thereof. It will be noted that these tabs 20a are disposed substantially apart and straddle the angularly disposed end portions I8a of the basket I9 as shown best in Figure 5 of the drawings.

The operation of the modification as shown in Figures 4 to 6 inclusive of the drawings is substantially as follows:

When the smoker draws smoke through the bowl shank member I2, it passes backwardly through the adapter I 4 to the end portion Ila thereof and impinges on the partition I1b of the internal heat exchanger I1. The smoke then passes adjacent the wall I5b of the heat exchanger casing I5 through the notched portions I1c in the end of the internal heat exchanger I1. At this point considerable condensation takes place, and the condensed liquid is trapped in the heat exchanger casing I5, and is prevented from returning into the bowl shank member I2 by means of the extension of the adapter Il in the heat exchanger casing I5. After passing through the notched portions I1c the smoke progresses around the spiral passage defined by the spiral screw threads I1a adjacent the wall of the heat exchanger casing I5 on the outer side of which the ns ISc dissipate the heat to the atmosphere, thus condensation of the volatile fluids is accomplished intermediate the internal heat exchanger I1 and the heat exchanger casing I5, whereupon liquid drains to the lower side of the heat exchanger casing I5 and is maintained therein intermediate the walll lib and the flange Ia of the filter casing Il which is considerably smaller in diameter than the internal heat exchanger I1.

After the smoke has completed its travel in the spiral passage defined by the helical screw threads I1a, it passes through the notched portions I'Ic adjacent the flange IBa of the filter casing I8. Then the smoke progresses on the outer side of the filter casing I8 toward the partition I 1b, whereupon it enters the perforated end of the basket I9 and passes through tobacco therein (not shown) toward the cover 20. The smoke then passes through the spaces provided between the end of the filter casing I8 and the cover 20 between the tabs 20a. After passing around the cover 120, the smoke is then drawn backwardly through the stem I3 to the smokers mouth. Saliva passing through the stem I3 into the heat exchanger casing I6 is trapped therein and prevented from flowing backwardly into the smokers mouth through the stem I3. When it is desired to clean the pipe and change the ltering tobacco, the operator proceeds as follows:

The heat exchanger casings I5 and I6 are separated from their telescopic connective relation with each other and the internal heat exchanger I1 together with the filter casing I8, basket I9 and cover 20 are removed permitting the operator to wipe the condensation out of the heat exchanger casings I5 and I6 and from the internal heat exchanger I'I. The basket I9 is removed from the lter casing I8 by grasping the portions I9a with the ngers and longitudinally sliding the tobacco (not shown) out of the lter casing I8 engaged by the perforate end portion |917 of the basket I 9. The cover 20 is removed in the same operation. When the basket I9 is replaced in the filter casing I8, tobacco is inserted therein and the cover 20 is placed in position as shown in Figures 4 and 5 of the drawings. The pipe is again assembled as shown in Figure 4 of the drawings ready for use.

Though I have shown and described a particular constructional combination and arrangement of parts and portions and a certain modication, I do not wish to be limited to the particular construction, combination and arrangement, nor to the modification, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claim.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

In a smoking pipe of the class described, the combination of a bowl shank member and a stem member, heat exchanger casings connected together in telescopic relationship and interconnecting said stem member and said bowl shank member, an internal heat exchanger member in 6 said heat exchanger casings having a partition therein and hollow cylindrical portions extending at opposite sides of said partition longitudinally of said heat exchanger casings, said internal heat exchanger member having externally helically disposed screw threaded portions adjacent the walls of said heat exchanger casings, one of said heat exchanger casings having a smoke inlet portion at one side of the partition of said internal heat exchanger member, a lter casing having an open end positioned in said internal heat exchanger member at the opposite side of said partition, a basket in said lter casing having a Vented end and an open end adapted to contain filtering tobacco therein, and a cover for said lter casing at the open end thereof near the open end of said basket, opposite ends cf said internal heat exchanger member having notched portions therein communicating with the helical passage dened by said helically screw threaded portions, said filter casing extending inwardly of said internal heat exchanger member, and said filter casing having an external annular flange arranged to` support the same in concentric relation with the interior of said internal heat exchanger member.

ROBERT LEQUEUX SMITH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 710,740 Berninger Oct. 7, 1902 736,757 Martin Aug. 18, 1903 976,936 Schulte Nov. 29, 1910 1,005,067 Penney Oct. 3, 1911 1,260,460 Schubert Mar. 26, 1918 1,868,469 Broadway July 19, 1932 1,915,414 Foley June 27, 1933 2,116,951 McClune May 10, 1938 2,207,849 Blum July 16, 1940 2,243,091 Eguchi May 27, 1941 2,357,018 Miller Aug. 29, 1944 2,397,294 Schultz Mar. 26, 1946 2,426,542 Wilson Aug. 26, 1947 FOREIGN PATENTS Number Country Date 367,684 Great Britain Feb. 25, 1932 663,887 France Apr. 15, 1929 

